/Engine/Source/Runtime/Engine/Classes/GameFramework/CharacterMovementComponent.h
Sweeps a vertical trace to find the floor for the capsule at the given location. Will attempt to perch ifShouldComputePerchResult()returns true for the downward sweep result. No floor will be found if collision is disabled on the capsule!
virtual void K2_FindFloor ( FVector CapsuleLocation, [FFindFloorResult](API\Runtime\Engine\FFindFloorResult) & FloorResult ) const